Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c75f1d048288b5b373fea2f4ace4a93c3783b9695730c862dab7ae97451c6985' 
  AND token = 'FSbGFXpvbDfnF0yfEso7pGmlN7ahtJZKc3Xhr36T6TU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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