Currently you will need a Project Manager role to have the rights to create an API key. If you do not have this role, either ask your project manager to provide you with a key or request to be elevated to the Project Manager role by your Account Administrator.
having the correct role, you will see the >ADMINISTRATION section in left side menu. Pick there >SCANNERS and API KEYS topic.
In the following screen you will be able to manage all API keys, see the usage and activate or deactivate the keys.