INSERT INTO cscart_multi_declock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '83641175b7dc54845f1ee4ebac0b5c517dfef977b955f2f9516bf5d1b5817e8e', 
    'I6pMUejEklVLhqWyoI/JjpgWhivhgupup6gfuwSTpeQ=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00028

Result

int(1)