It wasn't that difficult -- though it was after midnight PDT.
I was looking for ghosts. I wasn't expecting to get a key to Ajaya Bliss. However, since I was going to Ilmenskie, I decided to teleport to the key spawn point in Gori Blear. As I expected, another player was there waiting. Also, Serguie was over in the corner afk. I tried to engage the other player in chat, but got a cryptic response. I decided to stay for a while and just watch to see what would happen. I'm curious like that sometimes. Shortly after my arrival, two other players showed up and began to chat. The three other players now present seemed to know each other. They moved around together for a while, and then the two who'd came after me left. While this was happening, the first other player kissed me and I hugged back, but we didn't have a conversation. After the other two left, there were now just two of us. A couple of times, new players arrived, and then left immediately. While waiting, I stood back from the key spawn point, so the other player there was able to pick it up easily when it appeared. After obtaining the key, the other player continued to stand over the spawn point. I continued to stand back from it. After a while, my avatar went afk. Then the avatar of the other player went afk. A bit later a key appeared. I watched for a while as the other player continued to sleep. Then I walked over and picked up the key.
Later on, I found a second key that was not in either of the two locations known to spawn keys for AB. Either someone dropped it, or the devs have made some changes. So now I have two keys for AB. Didn't see any ghosts, though.