Sandbox

SELECT 
  product_id, 
  amount 
FROM 
  cscart_warehouses_destination_products_amount 
WHERE 
  product_id IN (
    782, 819, 781, 765, 764, 763, 762, 760, 
    758, 752, 751, 750, 749, 747, 744, 743, 
    742, 741, 732, 731, 727, 725, 724, 723, 
    809, 810
  ) 
  AND destination_id = 9 
  AND storefront_id = 0

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}