SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '99231f93c8cac110dfff83fb6d22b4ac063657f657c50195ce86b16ee47ffa7d' 
  AND token = 'Mb0JrwtYbwgRKHTx+BA5aEGK+GD5Lfdjx0mWJcAAvws=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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