SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '215c24a9e45cc5033e562deba862c218afa283db8db6bb919f0b14a27a8bed0b' 
  AND token = '/c3MydqwbF7uCStH6EpBSdlja9GlbIa4TCeGeI6KIYY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

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