SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c209cf202806750a26fd2f15a6c776b0fa7d90519aa50efd504e78e6f05100dc' 
  AND token = 'KNHFzUWBy33TW8IaHa6VXm8pzfX/Sl3rWQ6EaUc7xUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

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