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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 (
    1391, 1392, 3612, 3613, 3614, 3615, 4224, 
    4225, 4226, 4227, 4228, 4229
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00087

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "Impossible WHERE noticed after reading const tables"
  }
}