Query Stuck in running server

Hi,

There are few query I found at the time of monitoring below

00:54:43.574338 | 26952 | select a.actno,MAX(b.actid) as
actid,MAX(b.actname) as name,MAX(b.phone) as phone,MAX(b.email) as
mail,MAX(a.subsno) as subs,MAX(t.pkgid
) as svcid,MAX(a.expirydt) as expirydt,MAX(d.domid) as
domid,MAX(d.domname) as domname from actbal a inner join subs s on
a.subsno=s.subsno inner join packages t on s.svcno=t.pkgno inner join
account b on b.actno=a.actno inner join ssgdom d on b.domno=d.domno where
a.actno not in ( select a.actno from actbal a inner join subs s on
a.actno=s.actno where s.status <= 15 and a.expirydt > $1) and a.expirydt
<= $2 and b.domno=$ group by a.actno order by MAX(d.domname),MAX(b.actname)

can somebody help me to understand it