Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52830b17c1564572d8e2e1cab9ccb86342d27567caf0274032f4527f21d465d8' 
  AND token = 'oE8sn/wUQunFcgLX1P5y8gKez8mQL0QRRgiKWCRQ8zs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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