Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ac9ad1a43695edb3445f520b67c736f51fbb71f87ce1faca59759fc0ac8bdc4' 
  AND token = 'z32aTs0Jza4bEPaoc63sFeMELTXM8yS9Rh+AwqXbqmQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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