Error Querying createdAt Attribute in access control

When trying to return a query constraint for the createdAt attribute, I get the following error.

Access control function:

 read: () => {
      return ({
        createdAt: {
          greater_than: new Date(new Date().getTime() - 1000 * 60 * 60)
        }
      })
    },

Error:

 {
            "name": "QueryError",
            "message": "The following path cannot be queried: createdAt",
            "data": [
                {
                    "path": "createdAt"
                }
            ]
        }

Is this expected behaviour?