Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2ca9c5bdeda3cb483da5593ac6ce79d086f4457771e0c1879e5b551366e80d8' 
  AND token = 'JocuGeEXPJ3E5hSo4ZsrOLnFycbUC/gk1KlXwkbd2lo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}