Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc648d9aa20d2f620b438d7b318ccb7bdf11cf05c5144872bf9014124fc7617f' 
  AND token = 'sWMQ9jGQSm1EjD4F6NCDlCSMGeJ0aj06kul/Llu9tMQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}