No!, there is no single key that can open all locks. Different types of locks have different keyways, which are the unique shapes of the keyholes that the keys go into. The keyway design determines the size and shape of the key that can fit into the lock. Additionally, many modern locks have advanced security features such as unique pin tumbler configurations, electronic or magnetic mechanisms, and other anti-picking and anti-bumping features that make it very difficult for unauthorized individuals to gain access to the lock.
While it is technically possible to create a master key system in which one key can open multiple locks, this would require that all of the locks use the same keyway and pin tumbler configuration. This is often done in large commercial or residential buildings, where certain keys are assigned to specific areas or rooms, but a master key is also provided to management or security personnel who need access to all areas.
However, in general, each lock is designed to be opened only by its specific key or a select few keys, depending on the locking system in place. It is not possible for a single key to open all locks.