Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63113faa37b28116e272e7ade952d6efabada5995d618b656ade4fad2e460a7d' 
  AND token = 'F3XDzq+OoGzWTdIlKaQ952n5/ERYXVOecwi1E/Hv3xU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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