Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49c7a94ea0414d9e9f9b3bd34923f6dd259d720b01091aab1e343cd512bae9a6' 
  AND token = '85QjT6C+kr8aN6f0sLgduyuuyqVgoQpQfTuJijaj7w8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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