SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'b864078a33bfa39943cbd8b399decdfffba042717a40ca5a175b05269699eb28' 
  AND token = 'hgHuvY1X8Ojw+xRrCLX1Vr5f+hqemHnDO9i3aTDUVP8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}