Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60eb9ad3bb461c7abf02a42147005836ce4c22e9d52b00ae3d352c93bef35969' 
  AND token = 'Slye5bWahujKhx7npryhxcEbLgX6sMeH0ULxgyLbOso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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