This puzzle is going to be a bit different than some of our
others. For starters, the Latitude and Longitude are solved by
completely different methods; however, the "key" itself is
definitely related.
We did the puzzle this way because we couldn't make up our minds
between two different ways to do this puzzle, yet we didn't want to
create two different puzzles for essentially the same "key". As
such, due to the double trouble nature of the puzzle it will have
an increased difficulty; nevertheless, we're sure you folks can
handle it.
The solution probably won't come to you automatically, but once
you clear your mind and focus on the problem you might be able to
exit swiftly from your home and claim the find.
Good luck!
You can check your answer for this enigma
here.