Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c2093791d958268504681a7fbf8aec77ee22a774b4e5ba6061e48fe0bbc6c54' 
  AND token = 'swH4eVm/5KcTyZNBczs5V2IIzkb5A9EBisKYXkZMchI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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