Sandbox

SELECT 
  cscart_promotions.*, 
  cscart_promotion_descriptions.name, 
  cscart_promotion_descriptions.detailed_description, 
  cscart_promotion_descriptions.short_description 
FROM 
  cscart_promotions 
  LEFT JOIN cscart_promotion_descriptions ON cscart_promotion_descriptions.promotion_id = cscart_promotions.promotion_id 
  AND cscart_promotion_descriptions.lang_code = 'ja' 
  INNER JOIN cscart_ult_objects_sharing ON (
    cscart_ult_objects_sharing.share_object_id = cscart_promotions.promotion_id 
    AND cscart_ult_objects_sharing.share_company_id = 1 
    AND cscart_ult_objects_sharing.share_object_type = 'promotions'
  ) 
WHERE 
  1 
  AND IF(
    from_date, from_date <= 1776141141, 
    1
  ) 
  AND IF(to_date, to_date >= 1776141141, 1) 
  AND status IN ('A', 'H') 
  AND cscart_promotions.zone = 'catalog' 
ORDER BY 
  cscart_promotions.priority asc

Query time 0.00076

JSON explain

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