Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bd0478fb4df72a4fed6826384a7da2e065db766358c8d242e890ea8d892450d' 
  AND token = 'ABlKFapZco/VcSi30lmCHaeDlVzTmVUGPEwQJZimrik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00144

JSON explain

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