What is the Vault CLI command to query information about the token the client is currently using?

`vault lookup token` is not a valid Vault CLI command structure; the correct subcommand order for token inspection is `token lookup`.

The `vault token lookup` command is specifically designed to inspect a Vault token. When run without arguments (or with the argument `self`), it displays details about the token currently configured in the CLI's environment, such as its policies, creation time, and remaining TTL.

`vault lookup self` is an incorrect command structure; while `self` is a valid argument for `vault token lookup`, `lookup` is not a top-level command here.

`vault self lookup` is not a valid Vault CLI command structure; the correct command sequence to inspect the current token is `vault token lookup`.