SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93f54f11386dee37de5c63587c888d0ede2e4b8d73a56a09cb40910174d178eb' 
  AND token = '7ligKPvBDccLg8c/LKOszk6T9JGbfZOIS8LlhdaBSv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

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