Something needs to be done now to prevent future escapes or you're going to have a dead snake on your hands if you're ever able to find it. If you're willing to accept the responsibility of caring for an animal, then it isn't that much more difficult to make the proper arrangements for secure housing.
There are lots of ideas on this forum for securing lids to aquariums or keeping lids on sterilites or just about any corn rig as long as it's not something obscure that a corn probably shouldn't be housed in in the first place. Velcro, binder clips, books, straps, bungee cords, whatever it takes that is safe and not overly difficult to remove each time you need to get into the enclosure.
I don't understand how people who have repeated escapes handle it. I never had an escape and I wouldn't be able to sleep at night unless I was 99.9% sure that there was no way for one of my snakes to escape.
Just do what it takes to fix the problem. I don't understand making the investment of time and money to purchase and care for an animal but then being lackluster enough that it escapes never to be seen again.
I wouldn't buy a dog, bring it home the first day, tie it to a tree with a single piece of thread, and expect it to still be there the next time I came back.