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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 (
    6422, 6423, 6424, 6425, 2937, 2938, 2939, 
    2940, 2941, 6522, 6523, 6524, 6525, 
    2189, 2190, 2191, 2192, 2193, 2194, 
    2195, 2196, 2197, 2720, 2721, 2722, 
    2723, 2769, 2770, 2771, 2772, 2773, 
    2774, 2775, 2776, 2777, 2845, 2846, 
    2847, 2848, 2849, 2850, 2851, 2852, 
    2853, 2854, 2855, 2856, 2857
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00026

JSON explain

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