Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '900d690afba76ca8244edca0ce3359fc73e61d8736bfbb63e7a22bcd3d289051' 
  AND token = 'eqN3uAgsXKfUM2aS5RknIXUWMxLWlChuS7fygIyUMmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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