Most employers ask if they can contact your current employer.
I have a longer commute than you do, plus traffic, and I've been here almost 9 years!! I always day dream about getting another job. But I am afraid to leave here then not like the other job. I don't love my job (anymore) but I don't hate it either. If I were to leave they would have to replace me immediately so I wouldn't be able to come back if I didn't like the new job.
I think my company is going down the drain slowly anyway, so I'll just tough it out until they either let me go or the company folds.

But I definitely think you should look for a job closer to home. One that will appreciate your education and experience. One that has benefits and sick days. I know it is scary............but you can do it!! I hate change myself, but sometimes you have to just deal with it.

Good Luck!!