SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '225e3c14daa8f064d79fd2eb080a9404a5b2201ceb2aba16ada73eb2d49b71b8' 
  AND token = 'y4YekiGW46532HH8n+CmyKHlE1xW+G/EU0de41pMzr4=' 
  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