SELECT 
  cscart_product_review_prepared_data.product_id AS product_id, 
  cscart_product_review_prepared_data.average_rating AS average_rating, 
  cscart_product_review_prepared_data.reviews_count AS reviews_count 
FROM 
  cscart_product_review_prepared_data 
WHERE 
  cscart_product_review_prepared_data.product_id IN (
    1840, 1841, 1842, 1843, 1844, 1845, 1846, 
    1847, 1848, 1849, 1855, 2915, 1857, 
    1862, 1835, 1834, 1863, 1809, 1864, 
    1150, 1152, 1149, 1151, 1148
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00036

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.0149298,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_product_review_prepared_data",
          "access_type": "ALL",
          "possible_keys": ["PRIMARY"],
          "loops": 1,
          "rows": 25,
          "cost": 0.0149298,
          "filtered": 96,
          "attached_condition": "cscart_product_review_prepared_data.storefront_id = 0 and cscart_product_review_prepared_data.product_id in (1840,1841,1842,1843,1844,1845,1846,1847,1848,1849,1855,2915,1857,1862,1835,1834,1863,1809,1864,1150,1152,1149,1151,1148)"
        }
      }
    ]
  }
}