SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ae06bd0843ecf6e555b0d47e17de67250752fb3cabd89b12bb2864f242470d8' 
  AND token = 'LghHFxWXjliKNdsuzq1anoAsMy1P2ejJyQX2U/DVJvo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

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