Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cded60942b4fc3f57804b55982d5ccf571c40c3cbf0c2d7901795795546b993f' 
  AND token = 'JsQU8LmLuZu7XMWJxelIYYyqn5O8VbRJmrR7iGZZ+MA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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