Treasure Lock Key

In a cave there is a treasure within a big metal box with a lock on it. There is also a monster in the cave that has two keys with him; one gold and the other silver. The monster will give you only one chance to open the lock using one of the keys. If the box doesn’t open, the monster will kill you. Since the monster is a bit helpful it would give you a clue in finding out the correct key. Can you choose the correct key by deciphering the below clue?

A GKOY OEPD LYEO DCNO EAAR NNN

Answer

The gold key will open the lock.

The clue says “A Golden Key Can Open Any Door”. Decipher the message by taking the first letter of each word, then the second letter of each word, then the third letter and so on to construct the sentence.