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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 (
    245, 238, 239, 74, 73, 71, 75, 72, 70, 76, 
    67, 86, 106, 105, 101, 69, 125, 120, 117, 
    113, 68
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "ALL",
      "possible_keys": ["PRIMARY"],
      "rows": 52,
      "filtered": 40.38461685,
      "attached_condition": "cscart_product_review_prepared_data.storefront_id = 0 and cscart_product_review_prepared_data.product_id in (245,238,239,74,73,71,75,72,70,76,67,86,106,105,101,69,125,120,117,113,68)"
    }
  }
}

Result

product_id	average_rating	reviews_count
238	4.00	1
239	3.00	1
245	4.67	3