[Gintovtosik]

Indeed it looks like astral sight to me. I think what triggered this experience was more the fact that your body was tired (as it had been a long night) rather than the very cocaine. When I go to sleep late at night, I happen to activate my astral sight rather quickly, I think it's because the etheric body expands faster, followed by a dephasing of the astral body, even if one is not fully asleep.