Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f72d0e51c8c7df4118d4c24d2f34e5a8792e886457b3ce7c945bc6478c964ec' 
  AND token = 'b/XGTivqVly9jgt8VYrzktTcooV5W9qcLhdtuDQ1Too=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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