Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d119d8b60db7eb52c3083a6dfd336a4e0cab63d1663487ecfcb0a36eee71f9d' 
  AND token = 'Bt4AMNfNJmFvRjY9glA4HeBZKs9MiYxXWo+AoKwEnuk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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