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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 (
    298, 53, 232, 55, 337, 205, 3478, 392, 
    66, 69, 5556, 89, 5477, 150, 475, 234, 
    139
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "ALL",
      "possible_keys": ["PRIMARY"],
      "rows": 57,
      "filtered": 29.825,
      "attached_condition": "cscart_product_review_prepared_data.storefront_id = 0 and cscart_product_review_prepared_data.product_id in (298,53,232,55,337,205,3478,392,66,69,5556,89,5477,150,475,234,139)"
    }
  }
}