Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd22349f6c3cac2b3fc07aca91a14c88bd388f0580018f01ab6178e6035bd8f9' 
  AND token = 'JZgXe58C/kHC1mUnjgu1fW4V+edXSznwoJ6GST/+cuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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