Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '071613d8a8e4388f688f8fb7d9730a431f3679bf8861719bdc16c0a3d463afad' 
  AND token = 'tZU0j8cXgESCmaUhN6YI+EVKaGkLpekiV+9KJcMt4xI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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