Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd161b7b41d484f72e0043ea90c8b60c03d02432c700400ab28ecff01a58eed4' 
  AND token = '9aLoiaqakOL2oAGCWo8woUo9gua5xQvJv5sf8UXzXMo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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