SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  descr1.product as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id, 
  descr1.full_description as full_description, 
  descr1.short_description as short_description, 
  GROUP_CONCAT(
    DISTINCT tags.tag 
    ORDER BY 
      tags.tag SEPARATOR ', '
  ) AS tags 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
  LEFT JOIN cscart_tag_links AS tags_links ON tags_links.object_id = products.product_id 
  AND tags_links.object_type = 'P' 
  LEFT JOIN cscart_tags AS tags ON tags.tag_id = tags_links.tag_id 
WHERE 
  1 
  AND companies.status IN ('A') 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND (
    (
      1 
      AND products.product_id IN (278, 279, 280, 281, 282, 283, 284)
    ) 
    AND companies.status IN ('A') 
    AND prices.usergroup_id IN (0, 0, 1)
  ) 
  AND (
    tags.status = 'A' 
    OR tags.tag_id IS NULL
  ) 
GROUP BY 
  products.product_id, 
  products.product_id 
ORDER BY 
  NULL asc

Query time 0.00125

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.067569028,
    "nested_loop": [
      {
        "table": {
          "table_name": "products",
          "access_type": "range",
          "possible_keys": ["PRIMARY", "status"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "loops": 1,
          "rows": 7,
          "cost": 0.01296265,
          "filtered": 100,
          "attached_condition": "(products.usergroup_ids = '' or find_in_set(0,products.usergroup_ids) or find_in_set(1,products.usergroup_ids)) and products.`status` = 'A' and products.product_id in (278,279,280,281,282,283,284)"
        }
      },
      {
        "table": {
          "table_name": "prices",
          "access_type": "ref",
          "possible_keys": [
            "usergroup",
            "product_id",
            "lower_limit",
            "usergroup_id"
          ],
          "key": "product_id",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "ref": ["u985510652_ecartify_dev.products.product_id"],
          "loops": 7,
          "rows": 1,
          "cost": 0.007633035,
          "filtered": 96.69136047,
          "attached_condition": "prices.lower_limit = 1 and prices.usergroup_id in (0,0,1) and prices.usergroup_id in (0,0,1)",
          "using_index": true
        }
      },
      {
        "table": {
          "table_name": "descr1",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY", "product_id"],
          "key": "PRIMARY",
          "key_length": "9",
          "used_key_parts": ["product_id", "lang_code"],
          "ref": ["u985510652_ecartify_dev.products.product_id", "const"],
          "loops": 6.768395062,
          "rows": 1,
          "cost": 0.011598593,
          "filtered": 100,
          "attached_condition": "trigcond(descr1.lang_code = 'en')"
        }
      },
      {
        "table": {
          "table_name": "companies",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "4",
          "used_key_parts": ["company_id"],
          "ref": ["u985510652_ecartify_dev.products.company_id"],
          "loops": 6.768395062,
          "rows": 1,
          "cost": 0.006873123,
          "filtered": 100,
          "attached_condition": "companies.`status` = 'A'"
        }
      },
      {
        "table": {
          "table_name": "products_categories",
          "access_type": "ref",
          "possible_keys": ["PRIMARY", "pt"],
          "key": "pt",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "ref": ["u985510652_ecartify_dev.products.product_id"],
          "loops": 6.768395062,
          "rows": 1,
          "cost": 0.00740759,
          "filtered": 100,
          "using_index": true
        }
      },
      {
        "table": {
          "table_name": "cscart_categories",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY", "c_status", "p_category_id"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["category_id"],
          "ref": ["u985510652_ecartify_dev.products_categories.category_id"],
          "loops": 6.768395062,
          "rows": 1,
          "cost": 0.006873123,
          "filtered": 100,
          "attached_condition": "(cscart_categories.usergroup_ids = '' or find_in_set(0,cscart_categories.usergroup_ids) or find_in_set(1,cscart_categories.usergroup_ids)) and cscart_categories.`status` in ('A','H') and cscart_categories.storefront_id in (0,1)"
        }
      },
      {
        "table": {
          "table_name": "tags_links",
          "access_type": "ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "6",
          "used_key_parts": ["object_type", "object_id"],
          "ref": ["const", "u985510652_ecartify_dev.products.product_id"],
          "loops": 6.768395062,
          "rows": 1,
          "cost": 0.007347791,
          "filtered": 100,
          "attached_condition": "trigcond(tags_links.object_type = 'P')"
        }
      },
      {
        "table": {
          "table_name": "tags",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["tag_id"],
          "ref": ["u985510652_ecartify_dev.tags_links.tag_id"],
          "loops": 6.768395062,
          "rows": 1,
          "cost": 0.006873123,
          "filtered": 100,
          "attached_condition": "trigcond(tags.`status` = 'A' or tags.tag_id is null) and trigcond(trigcond(tags_links.tag_id is not null))"
        }
      }
    ]
  }
}