SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7119fe2a23a8f09d8f601a7d46b021a08e9660b78bf337ef2e9a43133bb5f7ae' 
  AND token = 'UDAIln9Kf/U8irX9N/lNp2IhgKcLJWffLxwZFQpMQEs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

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