Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ee430ed72070f034fcb021dbf04009de1ba4ba9148bac7a4c6119d610abef8dd' 
  AND token = 'tUXU//rWAIeCa9qfymjxWffqP8PgFyScvz88iWPMNdI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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