I'd say Yes .Who are you flying with? Some Easyjet gates are a 15 min walk from the gate. Once through the security (come on people, take off the belt and boots before you're asked) you would need to go straight to the gate. I am always to early... I am determined to be called out as in "the plane is waiting one day"and... just saunter on.
In my experience they do sometimes patrol the security areas calling out for imminent flights, but only if security is really backed up. Unlikely this time of year unless there is a problem at the airport.