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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 (
    2858, 2859, 2860, 2861, 2862, 2942, 2943, 
    2944, 2945, 2946, 2947, 2948, 2949, 
    2950, 3037, 3038, 3039, 3040, 3041, 
    3042, 3043, 3044, 3045, 3853, 5790, 
    5791, 5792, 5793, 5794, 5795, 5796, 
    5797, 5798, 6307, 6308, 6309, 6310, 
    6311, 6357, 6358, 6359, 6360, 6361, 
    6362, 6363, 6364, 6365, 6431
  ) 
  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 0.00026

JSON explain

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