A 1099-MISC is only sent if it needs to be reported for taxes. Since the amount was less than $600, it doesn't need to be reported. The link and info copied from the website is below:
https://www.ftb.ca.gov/about-ftb/newsroom/middle-class-tax-refund/help.html
1099-MISC income tax information
Individuals who received a California Middle Class Tax Refund (MCTR) of $600 or more will receive a 1099-MISC for this payment.
Taxable income
The MCTR payment is not taxable for California state income tax purposes. You do not need to claim the payment as income on your California income tax return.
Individuals who received an MCTR payment of $600 or more but did not receive a 1099-MISC should contact [phone number removed] to request a 1099-MISC. When prompted, individuals should press 1 for personal income tax assistance.
