Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '91ceaac152d7ede40942763b0507a5f67ec9f1997bc99ff46cfaa2bd1d031684' 
  AND token = 's9D9dZRwCyJNSrn1xQjHZJcb3r/IG7RihXaHq51zQEY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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