Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bf93335d6ffa5f04533060f9381724002942b885f4944400b99ff4f10fd74e1' 
  AND token = 'SL/BzT0Gnz6AzlVdTca0AU0gvJRube5jN7f3FAwD3wk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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