Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '775141305377bfd33a1f022fdf2d7716fbb8e138161cf6dff427a540c80f0015' 
  AND token = 'rKK3H6K/rDuAfKHy4w7QKFaNLNQhwpDjeAOU3hPRqoU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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