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 (
    40, 205, 37, 152, 160, 74, 73, 71, 75, 72, 
    108, 237, 191, 235, 70, 122, 115, 156, 
    90, 175, 196, 43, 104, 76, 129, 127, 121, 
    103, 95, 182, 41, 56
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "12.56"
    },
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "ALL",
      "possible_keys": [
        "PRIMARY"
      ],
      "rows_examined_per_scan": 52,
      "rows_produced_per_join": 31,
      "filtered": "61.54",
      "cost_info": {
        "read_cost": "6.17",
        "eval_cost": "6.40",
        "prefix_cost": "12.57",
        "data_read_per_join": "511"
      },
      "used_columns": [
        "product_id",
        "storefront_id",
        "average_rating",
        "reviews_count"
      ],
      "attached_condition": "((`pankajecarter_systemsix`.`cscart_product_review_prepared_data`.`storefront_id` = 0) and (`pankajecarter_systemsix`.`cscart_product_review_prepared_data`.`product_id` in (40,205,37,152,160,74,73,71,75,72,108,237,191,235,70,122,115,156,90,175,196,43,104,76,129,127,121,103,95,182,41,56)))"
    }
  }
}