Olds Achieva LS

While sitting at the BK drive through the car started running hot so I turned it off for the wait to let it cool down a bit. When I went to crank it back up it wouldnt do anything, all idiot lights were on like they normaly are when your turning the key but not so much as a click from the engine. I turned the key off and released the brake made sure it was in park firmly and tried again and it started, BUT as soon as I took my hand off the key it made that horrible over cranking noise as if it were already running and I tried to crank again ( it wasnt already running as above mentioned) then it drove home just fine. The airbag light stayed on which I have never noticed lit up before. When I got home I turned it off let it have a five minute rest and tried to crank it again just to see if it would do that again where I could hear it better. It did nothing, only the lights lit up but no noises no nothing. I replayed what I had done to get it to start before and it wouldnt work. Any ideas as to what the problem could be since I have less than 48 hours to have it running again.