Sandbox

SELECT 
  product_id, 
  amount 
FROM 
  cscart_warehouses_sum_products_amount 
WHERE 
  1 
  AND product_id IN (
    765, 764, 763, 762, 760, 758, 752, 751, 
    750, 749, 747, 744, 743, 742, 741, 732, 
    731, 727, 725, 724, 723, 809, 810, 720, 
    718, 717, 716, 715, 713
  )

Query time 0.00015

JSON explain

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