SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dcd9569ad3e15e4419ae61e29c33a0ca1d62a157318a92a2d1596059600e6b45' 
  AND token = '7/M1N0C8DIXxa3fqxMoJvkKSCScEc6H3G0XiKexj+3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

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