Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6094542b0a3ef27e4b17fe15c8629d7ca8ffc74583616ad3ede8f6f5afc438a6' 
  AND token = 'NgFySpz5ndURBAk5A2b+JhcCwWbg3hbv6eoZbhpkgO8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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