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SELECT 
  cscart_ult_product_prices.product_id, 
  MIN(
    IF(
      cscart_ult_product_prices.percentage_discount = 0, 
      cscart_ult_product_prices.price, 
      cscart_ult_product_prices.price - (
        cscart_ult_product_prices.price * cscart_ult_product_prices.percentage_discount
      )/ 100
    )
  ) AS price 
FROM 
  cscart_ult_product_prices 
WHERE 
  cscart_ult_product_prices.product_id IN (
    9876, 10474, 10491, 10489, 10471, 9880, 
    10472, 9885, 10488, 9897, 9895, 10467, 
    9900, 10470, 10466, 10477, 9889, 10475, 
    9890, 10483, 10495, 10490, 10469, 9877, 
    9894, 9891, 10480, 9893, 9878, 9886, 
    9882, 9888, 10482, 9776, 9777, 9781, 
    9775, 9778, 9779, 9780, 9782, 9790, 
    9787, 9791, 9792, 9795, 9784, 9785, 
    9783, 9786, 9788
  ) 
  AND cscart_ult_product_prices.lower_limit = 1 
  AND cscart_ult_product_prices.company_id = 1 
  AND cscart_ult_product_prices.usergroup_id IN (0, 0, 1) 
GROUP BY 
  cscart_ult_product_prices.product_id

Query time 0.00038

JSON explain

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