Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8fad4c5202b761d043bd143745db54a7c39ae4d3b01a821ec025ea7c293aba27' 
  AND token = '7fZNnIuT0I4RICA0uSWLQ2U8NkOzjfE15flavPLZxYo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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