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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 (
    6204, 6205, 6206, 6207, 6208, 3033, 3034, 
    3035, 3036, 3857, 3858, 3859
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00014

JSON explain

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