SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ba7047f5ce1cfee7cf06dc9c0e0f9665771f232ee1b852b8be6901ceb5dea35' 
  AND token = 'ReJS9ShugcpiR+idRhtOg83PA8zuNwlRbrrDIpcKGHg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

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