You need to see if there is a keyhole on the space capsule. If so, you need a key. If not, you don't need a key.

In the global offensive game of the anti-terrorist elite, only souvenir boxes can be opened without keys, and souvenir boxes can be obtained by watching professional competitions. In the game "CSGO", the special weapon box obtained by the player in the Battle of Crazy Teeth can be opened without a key.