Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f04e19f1ddfc9d609ab9903468e46cbc292f930e645fcdf8b35bd16bcbb61b30' 
  AND token = 'wiG0J0urIxu5kWPuy/QGgf3TJ4JDycMszHPH8IxGpH0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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