Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '459e1ddf9497966ce4db8d98560907ffd27a062a140d55f5d32e2edabcb3a5ab' 
  AND token = 'pPBbeJHbrAGydPUg7ZNM+lysQ7nGazCyH59WXOYiB8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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