Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9be9831ca7af6b2a3aa7664953bc685cb1fab0bf6f1fbc4fde342def92005b9e' 
  AND token = 'VnIf3N+KtP+sZ/Jprobbg4YGJm7C9cmVIrPL/3dlHFU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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