SELECT * FROM tabla WHERE UNIX_TIMESTAMP(CONCAT('1970-',MONTH(FROM_UNIXTIME(agenda_fecha)),'-',DAY(FROM_UNIXTIME(agenda_fecha)),' 00:00:00')) > UNIX_TIMESTAMP(CONCAT('1970-',MONTH(CURRENT_TIMESTAMP),'-',DAY(CURRENT_TIMESTAMP),' 00:00:00')) LIMIT 0,10