Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '174265e0eb296328ae1b5245ef05256dbd5888023f9477cfb4ea7c2ec08c566a' 
  AND token = '1jUyk22qqCa6I5zwBQD+p832fT2H2cn1xeKe0cvsICc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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