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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 (
    1154, 3315, 3318, 3687, 5076, 4691, 3071, 
    513, 3505, 3319, 3306, 3296, 1172, 1173, 
    4917, 4918, 3500, 3501, 3431, 6948, 
    3499, 3455, 3466, 3454, 3456, 3449, 
    3461, 3441, 3444, 3471, 3442, 3480, 
    3448, 3440, 3467, 3468, 3435, 3476, 
    3447, 3439, 3465, 3446, 3460, 3443, 
    3469, 3464, 3459, 6950
  ) 
  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 0.00028

JSON explain

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