Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'c1fda0abfa4a67bd26adc72c427dbcf587ef114d27f3be48c4fa99524d13e22e' 
  AND token = 'XssxZpc7hEWeaGKH2uMVakdjgnaPSrSFSvbdMWkFJrQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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