[TakeiT]

Код:

mysql_format(handle, gQuery, sizeof(gQuery), "SELECT `AName`,`HouseKey`,`LastLogin` FROM `players` WHERE `HouseKey` > 0 AND  `LastLogin` + INTERVAL 30 DAY <= NOW()  ORDER BY `HouseKey` DESC LIMIT 100");

is for 1 month, use INTERVAL 5 MINUTE for testing.