My friend has been frantically looking for his keys for a long time and believes it's been stolen. Just when he's about to give up, I find it lying in his drawer and rush to tell him. What I want to tell him is, "Look, I found your key! It was in your drawer all along (all this while)!"
Question is how do I translate the "all along" / "all this while" portion into Spanish? Is it natural to say la llave estaba en tu cajón todo este tiempo? Somehow, it doesn't sound natural to me...maybe not even correct.