SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c3b95b22446732a5e2ccf68db54040e6a92e56b1734bb459d830a44449d86ed' 
  AND token = 'GIJZ/1adAzfX0g86YTvfWEZvNZzWnO7akUpBzqZRcHA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

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