ccm_token - is a validation token. These are usually attached to requests where something on the page is responding to a user action and are used to make sure that it comes from the original page and not from a third party spoofing the original page (and trying to hack your database).

ctask=check-out - this is a parameter specific to the page, presumably an ecommerce page, because it is telling the page that the current controller task is the checkout task.

So together they are saying that the page should show the checkout stage, and confirming it is allowed to do so.

EDIT:
Correction to the above now you have provided more info. Not ecommerce checkout page, but concrete5 checking a page out for editing.

So together they are saying check this page out for editing and here is a token to say it is allowed to do so.