Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79e4f27cd7a7f93f70860447129c94b78da048d25f3e44069734cbd1d8f5ec10' 
  AND token = 'gi3y6yai31k75smbDBhyJ8qNUcTt0/1dfR5DjLUcu+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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