Take the battery out after draining it to about 60% and put it in a refrigerator. Lock the refrigerator and the MacBook Pro in a safe with a controlled environmental support system to keep it at optimal conditions for the hardware. If you can find one that suspends it in a vacuum, this would be best. Make sure the power for the safe and the refrigerator in the safe is redundant and connect them to an emergency generator just in case. Lastly, seal the safe in a nuclear fallout shelter.
You should be good for a while like this.