SELECT 
  cscart_product_prices.product_id, 
  MIN(
    IF(
      cscart_product_prices.percentage_discount = 0, 
      cscart_product_prices.price, 
      cscart_product_prices.price - (
        cscart_product_prices.price * cscart_product_prices.percentage_discount
      )/ 100
    )
  ) AS price 
FROM 
  cscart_product_prices 
WHERE 
  cscart_product_prices.product_id IN (
    125590, 125589, 125588, 125587, 125586, 
    125585, 125584, 125583, 125582, 125581, 
    125580, 125579, 125578, 125577, 125576, 
    125575, 125574, 125573, 125572, 125571, 
    125570, 125569, 125568, 125567, 125566, 
    125565, 125564, 125563, 125562, 125561, 
    125560, 125559, 125558, 125557
  ) 
  AND cscart_product_prices.lower_limit = 1 
  AND cscart_product_prices.usergroup_id IN (0, 1) 
GROUP BY 
  cscart_product_prices.product_id