SELECT 
  cscart_sg_questions.*, 
  cscart_sg_question_descriptions.question, 
  cscart_sg_question_descriptions.answer 
FROM 
  cscart_sg_questions 
  LEFT JOIN cscart_sg_question_descriptions ON cscart_sg_question_descriptions.question_id = cscart_sg_questions.question_id 
  AND cscart_sg_question_descriptions.lang_code = 'en' 
WHERE 
  1 
  AND cscart_sg_questions.status = 'A' 
ORDER BY 
  cscart_sg_question_descriptions.question asc

Query time 0.00167

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.015896086,
    "filesort": {
      "sort_key": "cscart_sg_question_descriptions.question",
      "temporary_table": {
        "nested_loop": [
          {
            "table": {
              "table_name": "cscart_sg_questions",
              "access_type": "ref",
              "possible_keys": ["status"],
              "key": "status",
              "key_length": "3",
              "used_key_parts": ["status"],
              "ref": ["const"],
              "loops": 1,
              "rows": 5,
              "cost": 0.00743232,
              "filtered": 100,
              "index_condition": "cscart_sg_questions.`status` = 'A'"
            }
          },
          {
            "table": {
              "table_name": "cscart_sg_question_descriptions",
              "access_type": "eq_ref",
              "possible_keys": ["PRIMARY"],
              "key": "PRIMARY",
              "key_length": "9",
              "used_key_parts": ["question_id", "lang_code"],
              "ref": [
                "u985510652_ecartify_dev.cscart_sg_questions.question_id",
                "const"
              ],
              "loops": 5,
              "rows": 1,
              "cost": 0.0052914,
              "filtered": 100,
              "attached_condition": "trigcond(cscart_sg_question_descriptions.lang_code = 'en')"
            }
          }
        ]
      }
    }
  }
}