SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2582d96c3b51d5fec45160c562eb3d0d1f1ec5ede932893f9eb64a7dde5278ba' 
  AND token = 'WO1h7diiO492+qdnrIy2XBgTuKtlIttqZiTJF8nEuok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

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