SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '122b1bc828d20418f06bda000edb8cd93b3ed29062f22675247ed3f5c3679c6e' 
  AND token = 'q0wz7RVbV8E+nHv4U0D/vPLHd7q8J/pIelz+dTB9YaU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Impossible WHERE noticed after reading const tables