This item is not included in any spawn asset, but it doesn't necessarily mean that it doesn't spawn naturally on any of the maps.
Metro_Cuffs_Key.dat
GUID 687bbc3eac5e4ab18d250dfe7704483f
Type Arrest_End
Rarity Uncommon
Useable Arrest_End
ID 57544
Size_X 1
Size_Y 1
Size_Z 0.28
Recover 57543
Blueprints 2
Blueprint_1_Type Tool
Blueprint_1_Supply_0_ID 57544
Blueprint_1_Product 67
Blueprint_1_Build 27
Blueprint_1_Map Elver
Blueprint_0_Type Barricade
Has_Clip_Prefab false
Blueprint_0_Supplies 1
Blueprint_0_Supply_0_ID 67
Blueprint_0_Supply_0_Amount 1
Blueprint_0_Build 27
Blueprint_0_Map Elver
Master_Bundle_Override core.masterbundle
Bundle_Override_Path Items/Arrest_Ends/Handcuffs_Key