SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a2947b9b31f7f625df3369cc0003d96380fdaea1a5ae21f7b57705ee7926056' 
  AND token = 'oPfjY7ItKvNXixE+C0cmbCeX1urWWRNx4cFUmnqry5s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

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