Cannot find Galleons Graveyard Key Guardian

Have been looking for several hours (in Dernel Jungle, Dark Forest, Volcanic Isles and Maro Peaks), cannot find a single Galleons Graveyard Key Guardian (not corrupted one), anyone know where to find it?

Appreciate if exact coords can be given, thanks. (The coords given in wiki seems doesn't work)

 

They may be found in the Dark Forest, Dernal Jungle, Dead Island, Maro Peaks, and Volcanic Isles. You can also get keys from the trade market and from level 55-75 world events.

 

Just tried Dernel Jungle (again) right now, didn't spot any...

Haven't try Dead Island yet, will try looking at there now.

 

Try world events, they have guaranteed key drops.

 

Oh wait sorry, just spot one when I am about to leave in Dernel Jungle. Thanks for the response.

Update:
Spotted more Galleons Graveyard Key Guardian (and also with Undergrowth Ruins Key Guardian) from Dernel Jungle, can confirm a specific area in the jungle to spot.