Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ee6b05038df371d3612dde306953437dcbcadb696c9a24b8b4bbe1611d0a61f' 
  AND token = '4iQ0vi+KF9GX41fm67cUk110zuq/KnHRDUQGJfUeyeU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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