SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ccb6f44cee5415f766c5cca9fad1231eb6a6bb2c4d0d9a56edc7b10c22cfccc0' 
  AND token = 'sUlmGu4ZQTqaiPGk2BYjdPLXOyeBIb7Gx0Gcmua8uF0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

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