Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02fc51334c18a4cffecd0dfc0e277cd1f6e98911e9335a7ee9e49ca8cdad033e' 
  AND token = 'C35rZzgtknB5liOxoEOcUyoLHQQsJ3XWqsvwuVERfGU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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