Not sure if the columns are the same as ours, but to not destroy it, you have to pull the wheel and the lock plate...have to get the pin out of the way that locks the column in one place. Either that or bust the column on the drivers side opposite the key and worry about trying to replace it later. Hopefully its not metal, the truck column ones are plastic.
After that, run the coil wire on the distributor to 12 volts, and jump the terminals on the back of the starter until it catches. If thats on Olds motor, not sure you can do that, the single exhaust crossover piece is probably hiding the starter, as is the heat shield. Might be able to get something in there to jump it though.
More work than getting a key made I guess.