Query in my slow query log

[mindhunter77]

Is there a way to optimize this at all? This one keeps showing up in my slow query log over and over again.

# Query_time: 5  Lock_time: 0  Rows_sent: 25  Rows_examined: 43681
SELECT *,
IF(displaygroupid=0, usergroupid, displaygroupid) AS displaygroupid
 FROM vbuser WHERE usergroupid = '2' ORDER BY RAND() LIMIT 25;