I do have the required permit for Florida. I’m pretty sure the rules are to have a box that is snake proof, not idiot proof. You can always use some tools and get into any cage or box. I always leave the key right in the lock, in fact one of my transport boxes has the key mounted on a wire so it can’t get lost, it is always right there. Technically, it meets the requirements for being locked. We are also required to label the box, identify contents, put a warning, lock it and keep the snake in a bag while transporting. I think if someone ignores the warning, deliberately unlocks and opens the box, the associated liability has been transferred to them. Quite often a small snake will be in a deli cup type of container that is taped up real good, then put in a bag for compliance, and then in the box.
Here’s a couple of pictures of a little box I made (will probably never even use it) that was too small to get a plastic container in the door, so I made the bigger one. Then I have a real big one that I bought, which is no better than what I have built.

This shows the way I label the box. I can slip a little paper label inside this zip lock bag thing. I have a Word document with these text boxes sized just right to print whatever I’ll be transporting. Works pretty good. I could probably upload that file if anybody would want to check it out or use it.
Note the “See details on reverse of this packing slip”

This shows the back of the label- the warning, scientific and common name, permit holder and phone number. All this is required here.

I would definitely recommend complying with all relevant authority when transporting, shipping and keeping venomous reptiles, and knowing the rules in any other state or whatever if they will be involved. And stay off the evening news.
Hope you get better Chris!