Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56fc065d03570140e237c61722c6a935b6fc562e07c80195d6c5b7100d7f6f9c' 
  AND token = 'loPH+SOXdTOqCHyDqRaeV8Zf2caS9izOPFYZTq+MDu8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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