Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed9863fdeba239ac388dcc35eff9f1b8cc1852546118f4f86e7e67edf6894311' 
  AND token = 'uET6XfMfT9bXqvtdO+80gasq/EzmT+MHw9I7ZXsBJqw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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