SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85130be5b07e2b886749ba630afe626c0e357671b6fac9c381c25731d51c373d' 
  AND token = 'WUkp5V+GG7XsNrXa9P5H5Lc7wUlQH9WrQFoyuhSevQk=' 
  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