So I pulled up a chart for you 27th march, 8:28pm melb, Australia.
4 scorp 57 Asc.
I'm not sure you're going to recover the key. 2nd ruler Jupiter is rx debilitated at 12th, so the key is on the ground or close to ground perhaps in garage or garbage room (12th house). Because its in 11th sign perhaps close to friends, or guest room. Rx indicates damage, broken perhaps. Opposition to Venus, so perhaps someone found it and discarded it. There is no aspect to your significator Mars.
Moon is Void. Sorry, I don't see you finding it. But if you do find it against the odds, let us know.
So I pulled up a chart for you 27th march, 8:28pm melb, Australia.
4 scorp 57 Asc.
I'm not sure you're going to recover the key. 2nd ruler Jupiter is rx debilitated at 12th, so the key is on the ground or close to ground perhaps in garage or garbage room (12th house). Because its in 11th sign perhaps close to friends, or guest room. Rx indicates damage, broken perhaps. Opposition to Venus, so perhaps someone found it and discarded it. There is no aspect to your significator Mars.
Moon is Void. Sorry, I don't see you finding it. But if you do find it against the odds, let us know.