Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97b9768bf69f633c6aa911f93f5fd8a30de55846e37dcf22b87c9813e8633856' 
  AND token = 'LuSTD8IBcTYS9vgc0k1sUSg4H5mBLWLwxZUoe7CCjQA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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