SELECT * FROM bussiness_setting WHERE `start`>=(SELECT DATE_FORMAT(CONVERT_TZ(NOW(), (SELECT `diff` FROM `timezones` WHERE `abbr_full`= (SELECT @@system_time_zone)), (SELECT `diff` FROM `timezones` WHERE `abbr`='CT')),'%h:%i %p')) AND `end` >=(SELECT DATE_FORMAT(CONVERT_TZ(NOW(), (SELECT `diff` FROM `timezones` WHERE `abbr_full`= (SELECT @@system_time_zone)), (SELECT `diff` FROM `timezones` WHERE `abbr`='CT')),'%h:%i %p')) AND iduser=2
please minimize this query??