So the bike fell over and landed on the key, which was in the ignition?
This is an easy Fix!!
All you have to do is pull the key out and use the spare. Don't have the spare? order one from honda with the number plate that came with your key.
Or maybe you can find the original owner of the bike and give it back to him, he should have the spare. Try giving the Vin number to the police and they can contact him for you.