Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96edf93ea0010f8b3fe6a47ea6d2feac2ace0e5cf5a3ab3c95a96d1f71c645d0' 
  AND token = 'd2qbjdtZJwK++/AMP6w9kdhdi04INjT7NUIGu/sX9tc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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