Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4232396d265fb70c7f4bcac77c75d801c020f7129414372c0f8c1d0cfc3b313f' 
  AND token = 'liflVk9TK6WFmaGWlJfxmAEFYplzNLilyxqdxU1uHfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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