SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82f11e129d44980aca2cebaafeca09001abdb5eb43beb86ec42b4aa34ffc8821' 
  AND token = '/0QPIxwxhFmxYiVlTQurXO7PszEzLS+bVHkBrXuolgk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

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