SELECT fldid, username, position, last_seen, DATE_FORMAT(last_seen, "%H:%i:%s") viewLastSeen, (UNIX_TIMESTAMP("2016-03-01 03-21-55")-UNIX_TIMESTAMP(last_seen)) idle, "2016-03-01-03-21-55" now, online, access_comp
FROM (`tbl_usermaster`)
WHERE `online` =  1
AND `last_seen` > '2016-03-01 02-51-55'
ORDER BY `last_seen` DESC