curl --request GET \
  --url http://localhost:8000/v1/keys \
  --header 'Authorization: Bearer <token>'

{
  "keys": [
    {
      "key_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "<string>",
      "key_prefix": "<string>",
      "key_suffix": "<string>",
      "environment": "<string>",
      "is_active": true,
      "status": "active",
      "created_at": "2023-11-07T05:31:56Z",
      "last_used_at": "2023-11-07T05:31:56Z",
      "deprecated_at": "2023-11-07T05:31:56Z",
      "grace_period_ends_at": "2023-11-07T05:31:56Z",
      "grace_period_days_remaining": 123
    }
  ]
}