Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '2b1fef3d1006909fd6d6f148eb0ba600790c8e611352d5407bc084ecfb7d16f4' 
  AND token = '7Wvi7q6cbRs3sFere9pshB99c+pDmSdyOAH6YNIPwSQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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