Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b4dc95022d9efec4dc0a2695438c6b3765bf49f8ec8e0f35d173cb08998f72da' 
  AND token = 'ySCcNwnagZiBNej8qIEsMdBvJF23Q0mOEJOpyw2r/vo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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