Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '299c60596e2531aa1adee2b53d55e1002f78621ca756108704838917f1c8193b' 
  AND token = 'VmhNPPkHnAX7EXH+CkwY47NejeU7vOedXJszHU0JGfQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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