SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b701c546f252466bfca3256b723926d2e82fd88b0824eaaf653925dfbde17b54' 
  AND token = 'KAaWGU7tqKl5DewxMv+LMgoo6Xjghp/s2sZzN4+HzdE=' 
  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