Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b93325d363d8aab5535ed187fc6f8f29acb0f6b92caa6a520793f236e1e927e' 
  AND token = 'gq5ke9HYJ0LMCBfZU2M+lbHr5FXEba7HubumrYeJ1xw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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