I generally play about an hour every day on average. But I mostly work on breaks not rhythm so when my band got together recently for a practice I had hand problems -not actual cramps but sometimes I just need to shake it off.
So my answer is that it is probably not unusual. Just the same you want to be careful if it is feeling painful for any length of time. As a 60 year old soreness is more and more an everyday kind of thing for me -lately my feet have been hurting so I may need a better shoe. For many years I lived with carpal tunnel problems till I had it surgically fixed last year. Our banjo player had some other type of hand condition that needed minor surgery,