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SELECT 
  product_id, 
  amount 
FROM 
  cscart_warehouses_sum_products_amount 
WHERE 
  1 
  AND product_id IN (
    814, 798, 797, 795, 765, 764, 763, 762, 
    809, 810, 715, 709, 708, 705, 697, 696, 
    695, 693, 682, 676, 622, 620, 619, 615, 
    608, 607, 600, 212, 209, 206, 196, 187, 
    184, 181, 177, 154, 151
  )

Query time 0.00032

JSON explain

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