Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08957e4ed8b2db3a868b1f99ddda0f2b0db9c3054d8faa7d8891793cea6c1d98' 
  AND token = 'Lln+2JGcmlLE6pTkok0Y8IAGUsgY81e3eUQQy/1tjXQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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