Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6069b7e68978a1c14be3d5e609ada470aa01d7c1b96b7ddcf0495b1eb1d737cd' 
  AND token = 'jQSlIbAmu+kJQwe7eF6I1sgby04oYAIBpYwNKnuPoVQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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