Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8325c2762f13d15aa8920185fd96ca50fc2d54cdf2cbf05eb1bd00245289ab67' 
  AND token = 'R9vI/EOF6wYPZUsxpfJb6xtGtQ/ceGMnUhnP7ffovb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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