Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92db7c71807e65e206adfe8eb9c7da03da239d8a1bf717f052563030bf71eb68' 
  AND token = 'pZcieG6En3msFOMKFGcbOH7D40SkrwADk4vL+BUnWS8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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