Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a3815a09f499fe83e73e6d979fc9c83b29e3df97ed46d1c74728d62c7ef7789' 
  AND token = 'pn24D3zZiFQoUpqTNXQnhhAH5Io3ABNfNkpJUczanlg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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