Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92864d93a56be5415c8a0456d7c6f019938359ab2311fbeaae322e20b0113568' 
  AND token = 'CDmjWLOwcNch0iNU0/f8P21ABQQ908WTI4Hz8j6xJac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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