Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1de638e563e84164c4b1d8db677d4115ec4d39fb36c16e592ca8c3165faa6c9c' 
  AND token = 'nvFl8FZp7zEQnGb+J10QW5xOMq5keyh06OLVwDw8nfw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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