Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bb46d00447c4e707a4b0d4d174c3f06f1380108fab57e5a9dfe31a8b4e4d855' 
  AND token = 'MfNMvBR1cmQHl/n8CWtH6ypVcSZGtL9rSOwo1HeO40U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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