Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd88803c25097423c00281e32910c324468c9d1ec2b3554654845be99ea97600' 
  AND token = 'Ie38dfS/xqIMMq0bmfCgI9nbcsPUdLcLKONnHwIyxyk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00069

JSON explain

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