SELECT 
  product_review_id 
FROM 
  cscart_product_reviews 
  LEFT JOIN cscart_users ON cscart_product_reviews.reply_user_id = cscart_users.user_id 
  LEFT JOIN cscart_companies ON cscart_users.company_id = cscart_companies.company_id 
  LEFT JOIN cscart_country_descriptions ON cscart_product_reviews.country_code = cscart_country_descriptions.code 
  AND cscart_country_descriptions.lang_code = 'en' 
WHERE 
  1 
  AND cscart_product_reviews.product_id IN (
    45574, 45834, 45833, 45832, 45831, 45830, 
    45829, 45828, 45827, 45826, 45825, 
    45824, 45823, 45822, 45821, 45820, 
    45819, 45818, 45817, 45816, 45835, 
    45836, 45837, 45838, 45839, 45840, 
    45841, 45842, 45843, 45844, 45845, 
    45846, 45847, 45848, 45849, 45850, 
    45851, 45852, 45853, 45854
  ) 
  AND cscart_product_reviews.status = 'A' 
GROUP BY 
  cscart_product_reviews.product_review_id

Query time 0.00104

JSON explain

{
  "query_block": {
    "select_id": 1,
    "filesort": {
      "sort_key": "cscart_product_reviews.product_review_id",
      "temporary_table": {
        "nested_loop": [
          {
            "table": {
              "table_name": "cscart_product_reviews",
              "access_type": "range",
              "possible_keys": ["idx_product_id"],
              "key": "idx_product_id",
              "key_length": "3",
              "used_key_parts": ["product_id"],
              "rows": 40,
              "filtered": 100,
              "index_condition": "cscart_product_reviews.product_id in (45574,45834,45833,45832,45831,45830,45829,45828,45827,45826,45825,45824,45823,45822,45821,45820,45819,45818,45817,45816,45835,45836,45837,45838,45839,45840,45841,45842,45843,45844,45845,45846,45847,45848,45849,45850,45851,45852,45853,45854)",
              "attached_condition": "cscart_product_reviews.`status` = 'A'"
            }
          },
          {
            "table": {
              "table_name": "cscart_users",
              "access_type": "eq_ref",
              "possible_keys": ["PRIMARY"],
              "key": "PRIMARY",
              "key_length": "3",
              "used_key_parts": ["user_id"],
              "ref": ["dev_db.cscart_product_reviews.reply_user_id"],
              "rows": 1,
              "filtered": 100
            }
          }
        ]
      }
    }
  }
}