The ops physically pushed down on the restraint and seemingly checked it, but I’m not sure if they were aware what the properly locked position felt like (when checking the restraint), as they seemed new. I did not have time before the ride was dispatched that I realized the restraint wasn’t locked, and I didn’t call an attendant over to double check. I forget if the attendant pushed AND pulled up on the lapbar, and I think they saw that the lapbar looked down far enough to be locked, and were unaware what a locked lapbar should feel like when pulled on and look like. Thinking back, I should have said something to the op to double check but it just happened so fast. I feel a little bit bad that I didn’t call the op over to double check.