Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41d704eba03b5ddb12cb20c738341f5f5fb7b97a5d5434bb3abc32c3314fe79e' 
  AND token = 'lknMC6c7uduA0Wyyj37UBJY3iwTBi9k6SaIPrXFrGIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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