INSERT INTO cscart_multi_declock_keys (key_id, token, expiry_at) 
VALUES 
  (
    'b76719fc65357a20f8d23f409e2707f08a8726330c2bc78046000d9fcb62710e', 
    'MSBEgXDIEgnAzOKY9UOmT2WV8RzlecoDB3VTgVK/FIQ=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00030

Result

int(1)