INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '21ce81de70154c9637fb365a7bc9d8542b16e6e71ec9fd66a83329855a98c047', 
    'kLhgBiy7TQRT6/lJdmwUMn/s4XpXiNPkvAXn4vnQw9Q=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00022

Result

int(1)