Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8aa6fdea20e56406a13303b8e113c289afaccabf00aecabc59bc2a3328199151' 
  AND token = 'O2l1MYEQQzJVCv7mI63JJMYFz29NlwUx2ZgQMkZMZho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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