Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '090e746a49adaf53754881f93f80fa4a61f50863034a5cc6587ec0c89c5bf726' 
  AND token = 'hTZtvyt43LfP2BwdU3nQM9VA7mSzdXMem0hKCFl/sgk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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